Mast



FIG. 1 is a perspective view of a mast showing our new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a third perspective view thereof;

FIG. 4 is a fourth perspective view thereof;

FIG. 5 is fifth perspective view thereof; and,

FIG. 6 is a sixth perspective view thereof.

CLAIM The ornamental design for a mast, as shown and described.